US 12,295,747 B2
Wearable device, control method for wearable device, and control program for wearable device
Naoya Hidaka, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC Corporation, Tokyo (JP)
Filed on Jan. 7, 2022, as Appl. No. 17/570,574.
Claims priority of application No. 2021-007856 (JP), filed on Jan. 21, 2021.
Prior Publication US 2022/0225932 A1, Jul. 21, 2022
Int. Cl. A61B 5/00 (2006.01); A61B 5/0205 (2006.01); G06F 1/16 (2006.01); H04W 4/029 (2018.01)
CPC A61B 5/681 (2013.01) [A61B 5/0205 (2013.01); G06F 1/163 (2013.01); H04W 4/029 (2018.02)] 12 Claims
OG exemplary drawing
 
1. A wearable device comprising:
a base member to be mounted on a living body or to be mounted on a fitting to be worn by a living body;
a receiver mounted on the base member and configured to receive a GPS signal and acquire a receiving quality index of the GPS signal;
a sensor that is mounted on the base member, and that outputs a signal depending on a positional relation of the sensor and the living body or the sensor and the fitting; and
a transmitter transmitting the receiving quality index and an output of the sensor to a different device that is configured to determine whether the wearable device is mounted on the living body or is mounted on the fitting, based on the receiving quality index and the output of the sensor, wherein
the receiving quality index is either a carrier-to-noise ratio or a signal-to-noise ratio, and
when the receiving quality index becomes equal to or more than a predetermined threshold value, the different device determines that the wearable device is away from the living body.